SPC Direct for Windows^TM

Reducing variability in all aspects of a process is the aim of Statistical Process Control. Moving SPC analysis from the office to the shop floor allows one to detect and respond to process shifts as quickly as possible, thereby saving time & money through increased efficiency and reduced scrap rates.

Stochos realizes that shop-floor SPC presents some unique problems, so we’ve made a unique package. SPC Direct is an extremely flexible, user-definable, real-time Statistical Process Control Monitoring and Analysis database that has been specifically designed for the factory floor. As part of its shop-floor design, SPC Direct can accept manual and direct gage input as well as automatically poll larger process control data acquisition systems. As a 32-bit application, SPC Direct for Windows^TM will run on either Windows 9x^TM,Windows ME^TM, Windows 2000^TM or Windows NT^TM.

SPC Direct consists of 3 modules, which allow distinctly different aspects of the program to remain separate:

1. SPC Monitor (Operator Interface)
2. Database Manager
3. Supervisor

In addition to providing added security, this program design allows for a useful division of labor that contributes to operator ease-of-use and screen simplicity.

• The Monitor is the operator interface through which data is gathered and SPC analysis is performed. With a single click, the operator can view any of the 32 configurable SPC Charts and view SOPs or variable-specific Corrective Action Instructions.
• Operators can enter Comments, view Graphic Images (CAD), log Environmental Conditions, and switch between Parts (Products) with a click of the mouse.

• The Database Manager program allows administrators to perform configuration, editing and review of data through one easy-to-use interface.
• The Supervisor program provides a real-time view of data collection and control charts for any station and part on the shop-floor from a remote location.

SPC Direct contains all of the tools that are necessary for a successful factory-floor SPC implementation:

• On-line data collection & storage
• Process capability & performance indices
• Environmental condition tracking
• Operating procedure display
• Control Charts
• Histograms
• Cause of failure logging
• Corrective action display

What is GENUINE Real-Time SPC?

SPC Direct is unique in the real-time world in that it simultaneously updates all SPC charts and associated calculations as the data is collected. All violations of control tests and/or specification limits are immediately conveyed to the operator via an on-screen alarm. This “watchdog” approach eliminates the need for operators to view each chart to check for out-of-control conditions and frees up their time for more productive tasks.

On-Line Control Chart Types Include:

• XBar & Range
• EWMA
• X & Moving Range
• Histogram
• XBar & Sigma
• P Chart
• Moving XBar & Moving Range

Cause of Failure Tracking

Users can log the Cause of Failure for any given alarm with a click of the mouse. A list of 12 Assignable Causes can be configured per variable. An off-line Pareto Analysis of the historical Causes will help you focus your process improvement efforts.

Data Collection

User defined MANUAL DATA INPUT forms can be filled in via keyboard or hand-held gage. Manual Input forms can be configured to collect up to 48 variables per reading.

AUTOMATIC DATA COLLECTION can be accomplished through virtually any device that has data output capabilities, such as automated gaging systems or PLCs.

Microsoft’s SQL 7.0^TM Provides Powerful Data Management and Traceability: Collecting data costs money. To make the most of your investment you’ll need to store your data for future reference in a manageable fashion. Microsoft’s SQL 7.0^TM gives you that power by storing all information (data values, causes of failure, operator comments, environmental conditions, etc.) in a powerful database tool. The sorting capability inherent in a relational database allows the separation of data by any user-defined traceability field such as Gage Station (Work Area, Machine, Tool, etc.), Product (Part#, Part Family, etc.), Lot (Lot#, Operator, Shift, etc) and Date/Time. This capability facilitates valuable off-line investigations such as Machine Capability and Supplier/Customer Studies. Crystal Reports^TM, Seagate’s powerful report writer, will allow you to meet all of your database reporting needs.

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Last Modified: 5/20/2006